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Very High Temperature Exotic Thermocouple Probes

XTA, XMO, XPA, XIN Series

XTA, XMO, XPA, XIN Series:Very High Temperature Exotic Thermocouple Probes

See All Models Below

  • Sheaths
    • Tantalum
    • Molybdenum
    • Platinum/Rhodium
    • Inconel 600
  • Thermocouple Elements
    • Tungsten/Rhenium
    • Platinum/Rhodium
  • Insulations
    • Hafnium Oxide (HfO2)
    • Magnesia (MgO)
    • Alumina (Al2O3)
View related products - Thermocouples

Description

OMEGA® Exotic Thermocouple Probes are designed for use in extreme temperatures, up to 2315°C (4200°F). These probes utilize either Platinum/Rhodium (types R, S, or B) or Tungsten/Rhenium (types G, C, or D) elements, with a variety of insulations and sheath materials. Depending upon the sheath material selected, these probes may be used in inert, oxidizing, reducing or vacuum conditions. The maximum temperature is based on the lowest max. temperature of the element, insulation and sheath material. Five cold end probe terminations are available: replacement probe, subminiature or standard size ceramic connector, heavy-duty standard size, molybdenum-sheathed nylon connector, or transition joint with 72-inch lead wire.

Sheath Materials
CodeMaterialMax.
Operating
Temp.
Working
Environment
Approx.
Melting
Point
Remarks
XTATantalum2300°C
4200°F
Vacuum3000°C
5425°F
Resists Many Acids
and Weak Alkalies.
Very Sensitive to
Oxidation Above 570°F
XMO*Molybdenum2200°C
4000°F
Inert
Vacuum
Reducing
2610°C
4730°F
Sensitive to Oxidation
Above 400°F
Non-bendable
XPAPlatinum-
Rhodium
Alloy
1650°C
3000°F
Oxidizing
Inert
1870°C
3400°F
No Attack by SO2
at 2000°F. Silica Is
Detrimental. Halogens
Attack at High Temp.
XINInconel
600
1150°C
2100°F
Oxidizing
Inert
Vacuum
1400°C
2550°F
Excellent Resistance
to Oxidation at High
Temp. Hydrogen Tends
to Embrittle. Very
Sensitive to Sulfur
Corrosion
*Refractory metals are extremely sensitive to any trace of oxygen above approximately 260°C
(500°F). Must be used in vacuum or in very pure inert gases such as Hellium or Argon.


Insulation Materials
CodeMaterialMax.
Operating
Temp.**
Approx.
Melting
Point
Remarks
HHafnia
(HfO2)
2500°C
4530°F
2830°C
5125°F
Nontoxic substitute for BeO.
High Thermal Conductivity.
MMagnesia
(MgO)
1650°C
3000°F
2790°C
5050°F
Hygroscopic.
Compacts Well.
AAlumina
(Al2O3)
1540°C
2800°F
2010°C
3650°F
Requires Considerable
Volume Reduction to
Compact Satisfactorily.
Note:
For temperatures above 1000°C (1800°F), all insulating materials experience a
substantial decrease in resistivity with increasing temperatures.

** Values given are for compacted insulation. For uncompacted hard-fired insulators,
useful temperature range can be 5 to 110°C (100 to 200°F) higher.
Molybdenum sheathed probes are not recommended in applications where they will be
exposed to carbon, including graphite.

For Graphite environments, Consult Omega's Custom Engineering Department for Pricing and Delivery on Tungsten Coated Molybdenum sheathed T hermocouples.

Termination Style Q
Type OGP heavy-duty, color-coded male and female connectors. Add $10 to base price.
Termination Style TJ
Heavy-duty transition termination with 72-inch leads. Add $13 to base price.
Termination Style HX
Type NHX high temperature ceramic male and female connectors with color identification dot. Add $17 to base price.
Termination Style SX
Type SHX miniature high temperature ceramic male and female connectors with color identification dot. Add $11 to base price.
Termination Style RP
Replacement probe style with 1" bare wire leads. No additional price.

Calibration1 Atmosphere2
Max.Temp3
Model Number
C
W-5% Re
vs. W-26% Re
V.
2300°C
4200°F
XTA-W5R26-U-062-30-H-*-**
XTA-W5R26-U-125-30-H-*-**
XTA-W5R26-U-125-24-H-*-**
R*
Pt-13% Rh
vs. Pt
V.
1475°C
2700°F
XTA-P13R-U-062-30-M-*-**
XTA-P13R-U-125-24-M-*-**
XTA-P13R-U-062-30-H-*-**
XTA-P13R-U-125-24-H-*-**
C
W-5% Re
vs. W-26% Re
I.V.R.
2200°C
4000°F
XMO-W5R26-U-125-30-H-*-**
XMO-W5R26-U-250-30-H-*-**
C
W-5% Re
vs.W-26% Re
I.V.R.
1540°C
2800°F
XMO-W5R26-U-250-30-A-*-**
XMO-W5R26-U-062-40-A-*-**
XMO-W5R26-U-125-30-A-*-**
R*
Pt-13% Rh
vs. Pt
I.V.R.
1480°C
2700°F
XMO-P13R-U-125-30-A-*-**
XMO-P13R-U-250-24-A-*-**
C
W-5% Re
vs. W-26% Re
O.I.V.
1540°C
2800°F
XPA-W5R26-U-125-30-A-*-**
R*
Pt-13% Rh
vs. Pt
O.I.V.
1480°C
2700°F
XPA-P13R-U-062-30-M-*-**
XPA-P13R-U-125-24-M-*-**
XPA-P13R-U-125-30-A-*-**
C
W-5% Re
vs. W-26% Re
O.I.V.
1150°C
2100°F
XIN-W5R26-U-062-30-M-*-**
XIN-W5R26-U-125-30-M-*-**
R*
Pt-13% Rh
vs. Pt
O.I.V.
870°C
1600°F
XIN-P13R-U-062-30-M-*-**
XIN-P13R-U-125-30-M-*-**
XIN-P13R-U-125-24-M-*-**
XIN-P13R-U-187-26-M-*-**
XIN-P13R-U-250-24-M-*-**
XIN-P13R-U-250-20-M-*-**
* Specify Termination Style: Q, TJ, HX, SX, or RP
** Specify Probe Length in inches


  
Note 1:   Prices subject to change
Please consult the Sales
Department for current pricing.
Note 2:   Atmospheres:
  O-Oxidizing
   I-Inert
   V-Vacuum
   R-Reducing.
Note 3:   Maximum service temperatures shown are for probes with the largest available gage wire leads. Consult Engineering for ratings of other dimension probes.
Note 4:   Bending: XPA and XIN sheathed probes with platinum elements be bent in the field.
Note 5:   Some probes available in dual configurations. Check with Sales Department.
Place Order(Specify Model Number)
Part Number/Desc.
Availability
Price
Description
Qty
Example part numbers are shown below. Use the box below to order specific models
XTA-W5R26-U-125-30-H-MQ-6
Star
Availability: In Stock  
$325.00   
Tungsten5% T/C, 1/8 dia. Tantalun Sheath
 
XTA-W5R26-U-062-30-H-6
Star
Availability:  
Consult Sales  
C Thermocouple, W-5% Re vs. W-26% Re, Tantalum Sheath, Ungrounded Junction, 0.062 inch sheath diameter, 30 AWG wire, HFO2 insulation, 6 inch length
 
 
XTA-P13R-U-125-24-H-12
Star
Availability:  
Consult Sales  
R Thermocouple, Pt-13% Rh vs. Pt, Tantalum Sheath, Ungrounded Junction, 0.125 inch sheath diameter, 24 AWG wire, HFO2 insulation, 12 inch length
 
 

Order By Part Number

Part Number
Qty
Part Number
Qty


All amounts shown in USD
Note:
Note 1: Prices subject to change. Please consult the Sales Department for accurate pricing.
Note 2: Atmospheres:
      O-Oxidizing
      I-Inert
      V-Vacuum
      R-Reducing
Note 3: Maximum service temperatures shown are for probes with the largest available gage wire leads. Consult Engineering for ratings of other dimension probes.
Note 4: Bending: XPA and XIN sheathed probes with platinum elements can be bent in the field.
Note 5: Some probes available in dual configurations. Check with Sales Department.
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